Question

Brenda is buying a computer monitor that is 25 centimeters tall and has a distance of 65
centimeters between opposite corners. What is the width of Brenda's new monitor?
centimeters

Answer 1

Answer:

• 60 cm

Step-by-step explanation:

Use Pythagorean.

The width and height are the legs and the diagonal is the hypotenuse of the right triangle.

• $w = \sqrt{d^2-h^2}$

• $w = \sqrt{65^2-25^2} =\sqrt{4225-625} =\sqrt{3600} =60$

Answer 2

Look at the diagram and apply Pythagorean theorem

$\\ \tt\hookrightarrow x^2=65^2-25^2$

$\\ \tt\hookrightarrow x^2=4225-625$

$\\ \tt\hookrightarrow x^2=3600$

$\\ \tt\hookrightarrow x=60cm$